ConnectTimeout defaults to never....

Currently and historically ConnectTimeout defaults to 0, which means the connector never times out when trying to connect to a non-responsive back-end. Although this is easy to change as a specified parameter in the connect string, it would make a lot of sense for the connector to default this to a finite value. We have had support issues where the combination of this default and back-end behavior made non-responsive back-end connections basically lock up the connectors trying to reach them, for example.

The current connector defaults the value to 10 for aurora configuration, but leaves it at 0 for others.